MAC Layer Performance of Different Channel Estimation Techniques in UTRAN LTE Downlink

Author

Martín-sacristán, David ; Cabrejas, Jorge ; Calabuig, Daniel ; Monserrat, Jose F.

Author_Institution

iTEAM, Inst. of Telecommun. & Multimedia Applic.

fYear

2009

fDate

26-29 April 2009

Firstpage

1

Lastpage

5

Abstract

Long Term Evolution (LTE) is the new standard proposed by the 3GPP to evolve towards 4G. Evolved UTRAN (E-UTRAN) specifications are currently completed and research groups are studying the performance of the last Release 8. Nevertheless, these studies lack a full modeling of the MAC layer because they either leave out retransmissions and turbo coding or assume ideal channel estimation. This paper uses an accurate LTE MAC layer simulator to perform a complete downlink LTE performance study. Results compare different channel estimation techniques showing significant difference among them, most of all regarding the robustness of the estimator against errors. Finally, LTE system performance assessment is presented employing a realistic channel estimator.

Keywords

channel estimation; telecommunication links; MAC layer performance; UTRAN LTE downlink; channel estimation techniques; Channel estimation; Downlink; Fading; Long Term Evolution; OFDM; Physical layer; Radio access networks; Robustness; System performance; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th

Conference_Location

Barcelona

ISSN

1550-2252

Print_ISBN

978-1-4244-2517-4

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2009.5073662

Filename

5073662